In an abrupt October shocker, FBI Director James B. Comey told Congress in a letter that the agency is investigating whether classified information exists in emails discovered in the sexting investigation of former Brooklyn U.S. Rep. Anthony Weiner, whose estranged wife, Huma Abedin, is Clinton’s close aide.

Even before news of the emails yesterday, Clinton’s lead was slipping in national polls. An ABC News Tracking Poll showed the former secretary of state’s 12-point lead on Tuesday slide to 4 points.

All of this came as voters were already casting their ballots across the country with less than two weeks before Election Day.

The fact that Clinton’s email scandal, which aides felt they had finally put behind them, would resurface at the 11th hour was a major stunner even in an election season known for unusual twists.

“This helps Trump in a time when he needs help,” Republican strategist Ford O’Connell said. “It will help him close the gap, but we’ll know better by Monday or Tuesday just how much this will help him. … The Clinton camp is running for cover. … This is a boost for Trump at the right time.”